Duplicator.



G. WOOD.

DUPLIGATOR.

APPLICATION FILED MAR.4,1'910.

Patented July 25, 1911.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH cm, WASHINGTON. D. c.

G. WOOD.

DUPLIGATOR.

APPLICATION FILED MAB..4,1910.

998,663. Patented July 25, 1911.

2 SHEETS-8HEET 2.

WlTNESSES! INVENTOR W2 ATTORNEYS COLUMBIA PLANOIJRAPN co., WASHINGTON,n. c.

GEORGE WOOD, OF NEWARK, NEW JERSEY.

DUPLICATOR.

Specification of Letters Patent.

Patented July 25, 1911.

Application filed March 4, 1910. Serial No. 547,178.

T 0 all whom it may concern:

Be it known that I, GEORGE '001), a citizen of the United States,residing at Newark, in the county of and State of New Jersey, haveinvented certain ne and useful lm 'novements in Duplicators; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same. reference being had to theaccompanying drawings, and to figures of reference marked thereon, whichform a part of this specification.

This invention relates to an improved duplicating apparatus, and isdesigned to provide a stop for the paper that is fed sheet by sheet intothe duplicator, the stop being operative while the duplicating sheet isin operative, that is, at a point in the rotation where the duplicatingroll is not in position to engage the impression roller. The feedingmeans is designed to provide a mechanism whereby the stop for the paperreleases the sheet to be fed, and immediately after this release, feedsthe paper through between the lIl'lDltSSlOI] roller and the duplicatingroll, the stop forming no obstruction to the passage of the paper,except when the duplicating roll is inoperative.

A further object of the invention to provide means for adjusting thefeeding of the paper. after it is released from the stops, so that thepaper can be fed to bring the impression from the duplicating roll nearthe top edge of the paper, or it can be so adjusted that the printingwill commence at a considerable distance down the sheet from the top.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a side view of the duplicator. Fig. 2 is an enlargedsectional view showing the stops in position to retard the sheet beingfed. Fig. 3 is a view similar to Fig. 2, showing the stops out of theway of the paper. and illustrating the paper being fed. Fig. 4 is asection on line 4, 4, in Fig. 1 with the duplicating roll removed, andFig. 5 is a section showing the feed roll and a portion of theduplicating roll and the adjustable means that causes the duplicatingroll to operate the feed roll at a desired point in the rotation of theduplicating roll.

The device comprises a standard or support formed with the side plates10 which are provided with the legs 11 and with the arched portion 12,the arched portion having bearings 13 between which is mounted theduplicating roll 14, the duplicating roll having, on its shaft, agear-wheel 15 which is in mesh with the driving gear 16 operated by thehandle 17, this mechanism being usual in duplicating apparatus, thegears being provided to give the proper ro tation to the duplicatingroll and still permit the handle to be turned to the right. In the sideframes 10, and at one end thereof, are arranged pins 18 which areprovided to detachably secure the end of a feeding table 19 which isprovided with an adjustable leg 20 and with the gages 21 which are heldby the set-screws 22 and are arranged to regulate the fecding of thepaper, the whole pile of papers being prevented from slipping down theinclined table 15) by rubber strips which are secured to the table 19.

To receive the top sheet of paper is arranged a shelf 21, which shelfextends from side to side between the side frames 10 and can have itstop face finished. or can be provided with a smooth, polished plate 25which projects with its edge substantially tangential with the peripheryof the feed roll 26. The feed roll 26 provided with grooves 27, shownmore particularly in Figs. 3 and 4, and within these grooves are adaptedto normally rest the stop lingers 28 which rock on the shaft 29 andwhich normally lie in the grooves 27, being pulled down by the spring 30fastened to the end of a latch 35 which latch is operated by a plate 32fastened to one side of the duplicating roll and so secured that theengagement of the latch 31 takes place after the duplicating sheet. onthe din ilieating roll has passed the feed roll 26. \Vhen the latch isengaged by the plate, the fingers 28 are forced up against the underside of a gage 33 which is arranged to swing on a rod 31 extendingbetween the side plates 10, the gage being normally pressed down bysprings 35 which are secured to the rod 34. It will thus be seen thatwhen the latch is pressed down and the fingers 29 are pressed up againstthe gage, a. stop between the gage and the fingers is formed so that thetop sheet can ride up and rest over the top edge of the feed roll 26,the operator being able to see, through the cut-away portions 36 in thegage that the paper is in place, this being possible be cause theoperator can see through the gap between the ends of the duplicatingsheet when the neXt sheet is to be fed. At this point of the rotation ofthe duplicating roll the feed roll 26 is not rotated, since theperiphery of the duplicating roll does not engage the periphcry of thefeed roll, but when the feed plate 37 mounted on the duplicating roll 14comes around in its rotation it frictionally engages the feed roll 26,since it projects beyond the periphery of the duplicating roll as shownin Fig. 5, and the fingers 28 having previously dropped into the grooves27, by means of the plate passing beyond the latch 31, the paper is fedby the feed roll 26, friction between the feed roll and the paper beingsupplied by the gage 33 pressing the paper down on the roll, this beingcaused by the springs The paper is then fed through as shown in Fig. 3,and is engaged by the duplicating sheet 89 and the duplicating roll 14which presses the paper between itself and the impression roller 40 sothat an impression is made on the paper and is fed off as a copy, beinginsured against following the duplicating sheet around by means of thefingers 41 on the rod 42, these fingers being adjustable by means of theset-screws 43, and are prevented from turning by these set-screws 43fitting into a groove 44 in the rod 42.

The impression roller 40 is mounted in bearings, each bearing beingconstructed on the end of a lever 45, each lever being pivoted at 46 andbeing normally pulled, on one end, by a spring 47 held at 48 to theframe 10, and on the other end being caught into a perforation 48) inthe end of the lever 45. Each lever, below the bearing on its end, isprovided with a perforation 50, and in each perforation is a rod 51arranged on a rock shaft 52, which rock shaft has, on the outside, a rod53 which is operated by one end 54 of a lever when it is desired tomanually release the impression roller from the duplicating roll, thisbeing sometimes necessary to remove a mutilated sheet, or when it isdesired to rotate the duplicating roll to distribute the ink, or forsimilar purposes, without making anyimpression. This release of theimpression roller is accomplished by pressing down on the lever 55 whichtilts the rod 53 upward and oscillates the rock shaft 52, and the rods51 then swing the levers 45 against the tension of the springs 47. Thefeeding plate 37 is slotted as at 56 and is held in place by a set-screw57, so that the feeding plate can be adjusted and grasp the paper so asto feed it through to cause the paper to be impressed with its top nearthe top of the sheet. or it can be slid back so as to bring the edge ofthe imprint a considerable distance from the top of the sheet. Thefeeding plate 37 is preferably rightangled in cross section and forms afiat face for its engagement with the duplicating roll whereby itreceives a substantial bearing and also forms a flat face forfrictionally engaging the feed roll.

The gage and the fingers form a positive stop for a sheet to be fed, andwhen the fingers drop into the grooves on the feed roll 26 and the gagepresses the sheet down on the feed roll, then the feeding plate 37engages the feed roll and makes a positive feed for the sheet of paperand guides it, in conjunction with the top edge of the fingers 28,between the impression roller and duplicating sheet on the duplicatingroll. The fenders 58 are secured on the ends of the fingers 41, thesefenders being downwardly curved and serving to direct the paper downwardafter it is printed upon so that it is deposited in a tray which isconveniently placed underneath the machine, these fingers insuring eachsheet going downward at the proper time and thus forming a compact pileof printed sheets.

To prevent the rotation in a reverse direction of the duplicating roll,I provide a brake, preferably the construction shown in Fig. 1,consisting of a brake-block 59 which is pivoted at one end to one of theside frames and has the teeth 60 thereon which engage the duplicatingroll, if it is operated in the reverse direction, so that it is locked.The brake-block 59 is held in place by gravity, as will be evident.

Having thus described my invention, what I claim is 1. A duplicatingmachine comprising side plates, :1 duplicating roll mounted between theside plates, means for rotating the duplicating roll, an impressionroller. a feed ro l, a gage, means for normally forcing the gage incontact with the feeding roll, fingers arranged to rock and adapted toengage the gage, means for operating the fingers from the duplicatingroll to cause them to lift the gage and to form, with the gage, a stop,and means for operating the feed roll from the duplicating roll when thefingers are disengaged from the gage.

2. A duplicating machine comprising side plates, a duplicating rollrotatably arranged between the side plates means for rotating theduplicating roll, an impression roller, a feed roll rotatably arrangedbetween the side frames and normally out of contact with the peripheryof the duplicating roll, an adjustable feeding plate on the periphery ofthe duplicating roll and adapted to rotate the feed roll at apredetermined point in the rotation of the duplicating roll, a rockingshaft, fingers on the rocking shaft, means on the duplicating roll forrocking the shaft in one direction. a spring for returning the shaft toits normal position, a gage adapted to swing, and a spring to normallyforce the gage in engagement with the feed roll, the gage being adaptedto be lifted by the fingers when the shaft is rocked.

A duplicating machine comprising side plates, a duplicating rollrotatably mounted between the side plates, means for rotating theduplicating roll, an impression roller, a feed roll, the feed roll beingarranged rotatably between the side frames and normally out of contactwith the periphery of the duplicating roll, a feeding plate adjustablyarranged on the periphery of the duplicating roll, a rod secured to theside frames, a gage arranged to swing on the rod and normally engage thefeed roll, a shaft adapted to rock, co-acting means on the shaft and onthe duplicating roll for rocking the shaft, and fingers on the shaftadapted to engage the gage to lift it when the feed roll is notrotating.

at. A duplicating machine comprising side plates, a duplicating rollrotatably arranged between the side plates, means for rotating theduplicating roll, a feed roll having grooves therein, a shaft adapted torock between the side plates, a latch on the shaft, a plate on theduplicating roll adapted to operate the latch to rock the shaft in onedirection, a spring to return the shaft to its normal position, fingerson the shaft, said fingers being adapted to enter the grooves in thefeed roll, a gage, and means for normally forcing the gage in contactwith the feed roll, the gage being adapted to be lifted when the shaftis rocked to withdraw the fingers from the grooves in the feed roll.

A duplicating machine comprising side plates, a duplicating rollrotatably arranged between the side plates, means for rotating theduplicating roll, a feed roll having grooves therein, a shaft adapted torock between the side plates, a latch on the shaft, a plate on theduplicating roll adapted to operate the latch to rock the shaft in onedirection, a spring to return the shaft to its normal position, fingerson the shaft, said fingers being adapted to enter the grooves in thefeed roll, a gage, means for normally forcing the gage in contact withthe feed roll, the gage being adapted to be lifted when the shaft isrocked to withdraw the fingers from the grooves in the feed roll,

and an adjustable feeding plate on the duplicating roll adapted torotate the feed roll at a predetermined point. in the rotation of theduplicating roll.

6. A duplicating machine comprising side frames, a duplicating rollrotatably mounted between the side frames, a feed roll having groovestherein, a shaft adapted to rock, fingers normally resting in thegrooves in the feed roll, a gage, a shelf to conduct a sheet of paper tothe top edge of the feed roll, and co-acting means on the shaft and onthe duplicating roll for raising the fingers, the fingers acting toraise the gage whereby the juncture of the fingers and the gage providesa stop for the feeding of the sheet.

7. A duplicating machine comprising side frames, a duplicating rollrotatably mounted between the side frames, a duplicating sheet on theduplicating roll, a bar secured to the side frames, fingers secured tothe bar, the fingers being tapered and having their points in proximityto the duplicating sheet, means for securing the fingers on the bar, anddownwardly curved fenders on the back of the fingers.

8. A duplicating machine comprising side frames, a duplicating rollrotatably mounted between the side frames, a lever pivotally secured toeach side frame, each lever having a bearing in one end, an impressionroller mounted in the bearings, springs, each spring having one endsecured to one end of one lever and its other end secured to a sideframe, each lever being provided with a perforation, a rock shaft, rodssecured to the rock shaft and entering the perforations in the levers,an outside rod projecting from the rock shaft, and a lever pivoted toone of the side frames and arranged to engage the outside rod.

In testimony, that I claim the foregoing, I have hereunto set my handthis 1st day of hfarch, 1910.

GEORGE XVOOD.

Witnesses:

WM. H. CAMFIELD, E. A. PELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

